Refrigerating apparatus



Sept. 14 1926.

c: L. M CUEN REFRIGERATING APPARATUS Original Filed Jan. 17, 1920 4Sheets-Sheet 1 Sept. 14 1926.

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Patented Sept. 14, 1926.

UNITED STATES PATE CHARLES L. MoCUEN, or nnrnorr, MICHIGAN, ASSIGNOR'BYMESNE AssIenMEnrs, '1'0.DELCO-LIGHT COMPANY, or DAYTON, OHIO, ACQRPOBATION or DELAWARE.

REFRIGERATING APPARATUS.

Original application filed January 17, 1920, Serial No. 352,059.Divided' and this application filed October 21, 1924. Serial No.745,044-

My invention relates to refrigerating apparatus in which a compressiblerefrigerant such as sulfur dioxid is employed, the same being compressedby a suitable pump or compressor then condensed into a liquid, thenpermitted to expand in refrigerating coils or the like andthereaftercompressed and" so on through continuing cycles. The object of myinvention is to provide a simple, eflicient and reliable apparatus ofthis kind characterized more particularly by certain improvements in thewaterv circulating system of the apparatus and in the structure andassembly of the pump chamber and the condenser chamber.

This application is a division of my application for refrigeratingapparatus, Serial No. 352,039, filed January '17, 1920.

In the drawings:

Fig. 1 is a plan view of my apparatus; Fig. 2 a section on the line 22of Fig. 1;

Fig. 3 an end elevation of the apparatus with the electric motorremoved;

Fig. 4 a side elevation of the apparatus with portions of the twocylinders or chambers broken away as on the line 2-2 (extended) of Fig.1 and with the water valve shown in section as on the line 88 of Fig. 1;

Fig. 5 is a section on the line 5 .5 of

Fig. 4;. 7

Fig.6 a vertical section on the line 6-6 of Fig. 5; and

Fig. 7 a horizontal "section on the line 7- 7 of Fig. 6.. i

As my invention relates to the pump and condenser cylinders it isunnecessary to show the complete refrigerating system and therefore therefrigerating coils more parsuch as an ticularly which may be of theusual and well-known character are not shown. Rofe'rring to" theparticular embodiment of the apparatus as herein shown, the samecomprses a punip cylinder or chamber 1, a compressor or pump 2 therein,a prime mover electric motor3 for driving the pump and a condersercylinder or chamber it all preferably mounted upon a suitablesingle baseplate 5 and having the connections, coils, and other devices hereinafterset forth in detail. i

The pump v2 is of the general construction and mode of o eration as thepump illustrated and described in Leonard Patent No. 1,233,069, datedJuly 1917. This pump is characterized by two intermeshing herring-bonegears, 6 and 7 contained within a casing 8 and driven by the shaft 9which is in turn driven by the extended armature shaft 10 through themedium of the coupling '11. The pump is submerged in a body of oilcontained within the pump chamber (the oil level being between the testcocks a) and the oilis supplied to the gears through a series ofrestricted passages 12 entering through the top of the casing andemerging from the interior thereof at the top middle portion of saidgears. In practice'these restricted oil supply openings 12 are formedfor the most part by central bores through screw plugs 13, Fig. 6. Thegas as it comes from the refrigerating coils through the inlet pipe 14and inlet passage 15 through the NT OFFICE.

pump head 16 enters the pumpchamber at munication with the is compressedby these gears and is discharged at the upper portion of the casing intothe horizontal discharge passage 18 and the vertical discharge pipe 19.This discharge pipe 19 extends above the oil level in the pump chamberand towards the up per part thereof, discharging the gas into the spaceabove such body of oil.

The pump cylinder is provided with a removable head 20 to whose lowersidethe cooling coils for the pump cylinder together with thebafiieplates'and coil supports are attached so that such cover and said partsconstitute a unit which in assembling the structure is inserted withinthe'pump chama the temperature of the cooling coils in the which arescrew threaded-into the dependingbosses 25 of the cover. These rods arealso adapted to support and position the two bafile plates 26 and 27,the former of which is clamped between the lower distance tubes 28interposed between the plates 23 and 26 and the upper distance tubes 29interposed between the plates 26 and 27. The

plate 26 has its periphery upwardly flanged so as to retain any liquidrefrigerant that might possibly be discharged from the pipe 19 and thesame is provided with a central opening through which such dischargepipe 19 passes and which is provided with an outwardly extending flange3O fitting around such pipe. The other baffle plate 27 which is itselfclamped between the lower ends of thebosses 25 and the top of thedistance tubes 29 has a downwardly turned flange and is of less diameterthan the plate 26.

The gas .whichis discharged from the pipe 19 strikes against the centralortion of the plate-27 and is downwardly eflected so as to separate anyliquid refrigerant from the gas. Thelower plate 26 acts to catch anycoils 22 because it is necessaryto keep the condenser chamber at a'lowertemperature,

such liquid refrigerant and prevent it from dropping upon the body ofoil below, such, plate retaining the liquid refrigerant until such timeas in the course of operation it will become gaseous and pass on to thecondenser chamber;

The cooling coils 22 are likewise secured to the cover 20 as shown inFig. 6 wherein it is seen that the ends of these coils are secured tocouplings 31 which pass through vertical openings in the cover and aresecured to the .pipe fittings 32 extraneous of the cover.

The cover 20 is provided with a central gas outlet 33 which iscontrolled by a hand operated valve 34 contained within a valve casing35 removably' secured to the cover by the bolts 36, In the drawings thisvalve 34 is shown closed but by removing the screw cap 37 and turningthe screw threaded stem 38 of the valve by means of a suitable socketwrench, the valve may be readily opened and the same remains in opencondition during the regular operation of the through the condensercoils may be reguap aratu's.

ext describing the condenser chamber and associated parts, the. coolingcoils 39 are of much greater extent than the cooling in order tocondense the incoming refrigerant or gas supplied from the pump chamber.

These coils 39 are supported by a horizontal plate 40 which in turn issupported from the lower side of the top cover 41 of the condenserchamber through the medium of the vertical rods 42 which screw into thebosses 43 depending from the lower side of the plate 41. The upper' endsof the coils 39 are provided with fittings 44 which pass throughvertical openings in the plate 41 and are thereat secured to pipeconnections 45 and 46. The pipe connection 46 is pro- "vided with avalve for controlling the supply of water through the coils 22 and 39and for regulating the amount of flow relatively through such two coils.As shown in Fig. 5 this valve is a hollow plug valve 47 provided with astem 48 to whose upper end is secured an operating handle 49. This valveis located in the pipe connection 46 which is provided with the port5000mmunicating with the outlet end of .the coil 39, a port 51communicating through the horizontal pipe 52 with one of the pipeconnections 32, and also with a port 53, which ports are governed by thevalve 47. For this purpose the valve has a central vertical. passage 54and a lateral communicating way or passage 55 on its periphery. Inaddition this pipe connection 46 has an outlet passage 56 with which theoutlet of the coil 39 is adapted to communicate directly through thepassage 53, or indirectly through pipe connection 52, cooling coils 22and pipe connection 57 which connects between the outlet of the coils 22at one of the pipe connections 32 and the pipe connection 4-6.

WVhen the valve 47 is in the position shown in Fig. 5 all of the waterwhich passes through the coils 39 is passed through the coils 22inasmuch as the passages 54 and are in communication with port 51 andpipe 52. When the valve 47 is slightly rotated in a clockwise directiona portion of the water may be passed directly to the discharge pipe 56-through the ,port and passage 53, the remainder which may be as much asdesired passing through the coils 22. Upon a further rotation of thevalve 47 the port 51 may be entirely closed and the supply vof water tothe coils 22 may be cut 'oif and all of the water passed directlythrough the port 53 and'dischargc pipe 56, it being understood that atthis time the passage way 55 will be in register with the port 53; Byrotating the valve still further the amount of water passing lated byrestricting the passage 55 by incomplete register between such passageand .the port 53. The amount of flow through 39 may be controlled andregulated to a nicety and also by the employment of a single valve allor a portion of the water discharged from the condenser coils may bebyv-passed through the pump chamber coils, and also the amount of theflow through the condenser coils may; be regulated to any desiredextent.

From the pump chamber the gas passes upwardly through the outlet 33,past the valve 34, through the horizontal pipe 58 through a passage 59in valve casing 60 (similar to the casing 35) past the valve 61 (whichin operation would ofcourse be open) and through the inlet port 62 inthe cover 41 of the condenser chamber, as shown in detail in Fig. 2.

The cylinder covers which are thus removable with their cooling coilsare connected together by the water and gas connections andare thereforeboth removable at the same time together with such coils,

I, denser cylinder after the fastening bolts 21 are removed.

l'Vhat is claimed is as follows 1. In a refrigerating apparatus, thecombination of a pump cylinder and a condenser cylinder, arrangedadjacent one another, cooling coils located in such cylinders, removablecovers for such cylinders having pipe connections with their respectivecoils, pipe connections between the two covers, a valve casing mountedon one 'of the cylinders and having ports and passages communicatingwith the outlet end of the concoils and" with both the inlet and outletends of the pum'p cylinder coils,and a single valve located in suchcasing and governing said ports and passages.

2. In a refrigerating apparatus, the combination of a pump cylinder anda condenser cylinder, arranged adjacent one another,

cooling coils located. in such cylinders,removable covers for such;cylinders having pipe connections with theirrespective coils, pipeconnections between the two covers, a va ve casing mounted on the coverof one of the cylinders and forming part of one of said pipe connectionsfor clamping one end of the adjacent cooling coil to said cover, saidvalve casing having ports and passages communicating with the outlet endof the condenser cylinder coils and'with both the inlet and outlet endsof the pump cylinder coils, and a single valve located in such casingand governing said' ports and passages.

3. In a refrigerating apparatus, the combination of housing means havingtwo openings, a removabe cover for each of such openings each coverhaving an inlet and an outlet, a coil supported by eacho-f such coversand connected to the inlet and out-. let thereof, and pipe connectionsfrom one cover to the other communicating with the inlets andoutlets ofsaid covers, either of said covers being'removable from the houstherein,

ing means without 4C. In a refrigerating apparatus, the combination ofhousing means having two openings, a removable cover for each of suchopenings each cover having an inlet and an outlet, a coil supported byeach of such covers and connected to the inlet and outlet thereof, andpipe connections from one cover to the other communicating withtheinlets and outlets of said covers, said pipe connections rigidlytying together said covers whereby they may be removed as a unit.

In a refrigerating apparatus, the combination of housing meanscomprising two cylinders arranged side by side each having a topopening, a removable cover for each of such openings each cover'havingan inlet and an outlet, a coil supported by each of such covers andconnected to the inlet and outlet thereof, and pipe connections :fromone cover .to the other communicating with the inlets and outlets, ofsaid covers, said covers being removable from the housin means withoutdismounting any part of the latter.

6. In a refrigerating apparatus, in comi said cylinders, a motor carriedb said base,

a rotary pump mounted in one o said cylinders and direct connected withthe of said motor, the other of cover for each armature a condensingcoil mounted 1n said cylinders, a removable a common supportingbase forof said cylinders, each cover being removable independently of the otherorof the cylinders, and pipe connections for connecting said cylinders,said pipe onnections being carried entirely by an removable with saidcovers.

8. In a refrigerating apparatus, in combination, two cylinders arrangedside by side and. having cover for each such opening, each coverhavtopopenings, a removable ing a water inlet and a water outlet and a portfor the refrigerant, a cooling coil suspended from each cover andconnected to the inlet and outlet thereof, outside piping con. nectingthe inlets and outlets of the cove? and a conduit connection from therefrige ant port of one cover to that of the other.

9. In' a refrigerating apparatus, a combination of housing means, a pumplocated two cooling 'coils' located therein,

two removable covers for said housing means, one for each c011 andhaving p1pe.

connections with their respective coils, pipe connectlons between saldcovers, a valve cas:

5 ing mounted having ports on said housing means and and passagescommunicating with the outlet end of the condenser coil CHARLES L.McCUEN.

